noxious C2+ Topic:Safety & Risk US /ˈnɑkʃəs/ UK /ˈnɒkʃəs/ See IPA manual Meanings 1 adj harmful, poisonous, or very unpleasant Noxious fumes forced the workers to evacuate the plant. Thesaurus Synonyms 1 adj · harmful, poisonous, or very... harmfultoxicpoisonousinjuriousdeleteriousperniciousunwholesome ↔ Opposites harmlessinnocuouswholesomebenign Word family Derived forms noxiousnessnoxiously Related forms obnoxiousnocuousinnocuous Etymology AI details From Latin noxius ('harmful'), from noxa ('harm, injury'), related to nocere ('to harm'). noxius Latin nocere Latin View etymology graph -> Topics Safety & Risk Word Formation & Derivatives External links Cambridge Dictionary Wiktionary Google Images # noxious **Type:** Word **Level:** C2+ **Part of speech:** adj **IPA (US):** /ˈnɑkʃəs/ **IPA (UK):** /ˈnɒkʃəs/ ## Meanings 1. harmful, poisonous, or very unpleasant ## Examples - Noxious fumes forced the workers to evacuate the plant. ## Synonyms - harmful - toxic - poisonous - injurious - deleterious - pernicious - unwholesome ## Antonyms - harmless - innocuous - wholesome - benign ## Derived Forms - noxiousness - noxiously ## Related Forms - obnoxious - nocuous - innocuous ## Roots and Affixes - Root: noxius - Root: nocere ## Etymology From Latin noxius ('harmful'), from noxa ('harm, injury'), related to nocere ('to harm'). ## AI Etymology Noxious comes from Latin noxius ('harmful'), from noxa ('harm, injury'), related to nocere ('to harm'). The etymological trail includes Latin noxius and Latin nocere. As an adjective, noxious means harmful, poisonous, or very unpleasant. The same family is visible in derived forms such as noxiousness and noxiously and related forms such as obnoxious, nocuous, and innocuous. ## Topics - Safety & Risk - Word Formation & Derivatives markdown